Red, green, and blue are each represented by a byte that is two hex digits. Hexadecimal is also used in the Red-Green-Blue color system in computers. In hex you need two digits where you need 8 binary digits to represent a byte. Hex numbers represent large numbers compactly and are used in programming as computers use bytes as a unit of information. You can also go from hex back to binary bits if needed. Humans typically use a base 10 system, while for computer applications it is easier to work with hexadecimal than decimal.Īs hex saves space (either paper space or screen space), you can more efficiently use hex instead of a large number of ones and zeros. While computers work with binary data, it can be difficult for humans to work with a large number of digits. The primary use of hex is a more people friendly way to represent the value. An example of a hexadecimal number is 3BF2. Computer science applications can use hexadecimal for binary coding in computing and digital electronics. The symbols include 0-9 and a-f (sometimes A-F). Hex or base 16 or hexadecimal is a numeral system that uses 16 symbols. Computers store text as numbers, and with hex you display the numbers not as a decimal number, but in base 16.
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